The following four events occur during reproduction in a placental mammal - HSC - SSCE Biology - Question 3 - 2020 - Paper 1
Question 3
The following four events occur during reproduction in a placental mammal.
1. Fertilisation
2. Implantation
3. Ovulation
4. Placental formation
In which order do the... show full transcript
Worked Solution & Example Answer:The following four events occur during reproduction in a placental mammal - HSC - SSCE Biology - Question 3 - 2020 - Paper 1
Step 1
Fertilisation
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Fertilisation is the process in which a sperm cell unites with an egg cell, resulting in the formation of a zygote. This is the initial step in reproduction.
Step 2
Ovulation
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Ovulation refers to the release of an egg from the ovary, which typically occurs once a month in the female reproductive cycle. This event must happen for fertilisation to take place.
Step 3
Implantation
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Implantation occurs when the fertilised egg, now called a blastocyst, attaches itself to the wall of the uterus. This is essential for the development of the embryo.
Step 4
Placental formation
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After implantation, the placenta begins to form to provide nutrients and oxygen to the developing embryo and facilitate waste removal.
